「🎉」 init(2025): day 1

2024/day03/part2.rb

@@ -0,0 +1,24 @@
+if File.exists?("input.txt")
+  file = File.open("input.txt")
+  file_data = file.read
+  file.close
+else
+  file_data = "xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))"
+end
+
+#puts file_data
+sane_data = file_data.gsub(/don\'t\(\).*?do\(\)/m, "").scan(/mul\(\d+,\d+\)/)
+#puts sane_data.inspect
+
+numbers = sane_data.map do |item|
+  item.scan(/\d+/).map(&:to_i)
+end
+#puts numbers.inspect
+
+result = 0
+
+for mul in numbers do
+  result = result + mul[0] * mul[1]
+end
+
+puts result